Not able to copy/paste/drag/drop folder, can't update AV, can't run MalwareBytes

I can't copy/paste/drag/drop folders. IE7 flashes on and off when opened. My AV software, BullGuard can't be updated. I can't run my installed MalwareBytes program. Also my services don't work right. I have trouble running System Restore. I can't get into Safe Mode. I can't run my Windows Installer service. I can't display my Network Places connection icons. I don't think that I can install or uninstall programs OK.

I was stupid and should have been more careful but I did run RegCure and had it fix what was free. I am NOT sure what exactly happened but I think that chkdsk ran since my FAT32 partition was questionable. I am NOT sure what chkdsk did to my C:\ drive. I should have been MORE careful when I saw that my PC had several BSODs. I should have copied down their stop codes.

Should I just salvage what I can and reformat my drive?

Please help me. I am at a loss.

Thanks in advance
stteng

P.S. Please be as detailed in your instructions as possible since I am NOT MS certified. My knowledge comes from exposure and my mistakes.

P.P.S. Please forgive me if I should have read other people's threads and also any fixed threads.

First of all, never use any registry tools. They won't cure anything, but they often will make things worse.
Secondly, do have a reason to believe, your situation has been caused by some kind of infection?

How can I be sure that my problem isn't virus/spyware/malware related?

Isn't it funny that I can't update my AV definitions? Isn't it funny that my copy/paste/drag/drop folders/files doesn't work? Isn't it funny that I can't install NEW programs and can't even uninstall old programs? Isn't it funny that I can't run [MalwareBytes] program? Isn't it funny that I can't display my Network Connections right? Isn't it wierd that my Extended Services tab is BLANK? Isn't it funny that NO taskbar application windows appear?